Eucommia ulmoides
Hardy Rubber Tree
Central China
Rounded to broad-spreading tree, pyramidal in youth.
Full sun, very soil tolerant, resist drought, pH adaptable.
Shade tree. Eucommia ulmoides is one of the only rubber producing trees that will grow successfully in the Midwest and Northeast. It has a broad-spreading, elegant growth habit. the foliage is an excellent glossy dark green in the summer. The bark is also quite handsome; gray-brown and ridged and furrowed.
Alternate, simple 3 to 6 inch long, about half as wide. Elliptic or ovate to oblong-ovate, serrate margin. acuminate apex and broad cuneate or rounded base.
Buds are imbricate, sessile ovoid, chest nut brown, .25 inch long, terminal lacking, ending in a leaf.
Gray to brown, ridge and furrowed.
Dioecious, staminate, clusters of brown stamens, female consisting of a single pistil.
Capsule like with compressed wings, 1.5 inch long oval-oblong, 1 seeded.
Seeds, cuttings.
